Structure and Magnetism of Mn5Ge3 Nanoparticles
Abstract
In this work, we investigated the magnetic and structural properties of isolated Mn5Ge3 nanoparticles prepared by the cluster-beam deposition technique. Particles with sizes between 7.2 and 12.6 nm were produced by varying the argon pressure and power in the cluster gun. X-ray diffraction (XRD)and selected area diffraction (SAD) measurements show that the nanoparticles crystallize in the hexagonal Mn5Si3-type crystal structure, which is also the structure of bulk Mn5Ge3. The temperature dependence of the magnetization shows that the as-made particles are ferromagnetic at room temperature and have slightly different Curie temperatures. Hysteresis-loop measurements show that the saturation magnetization of the nanoparticles increases significantly with particle size, varying from 31 kA/m to 172 kA/m when the particle size increases from 7.2 to 12.6 nm. The magnetocrystalline anisotropy constant K at 50 K, determined by fitting the high-field magnetization data to the law of approach to saturation, also increases with particle size, from 0.4 × 105 J/m3 to 2.9 × 105 J/m3 for the respective sizes. This trend is mirrored by the coercivity at 50 K, which increases from 0.04 T to 0.13 T. A possible explanation for the magnetization trend is a radial Ge concentration gradient.
- Authors:
-
- Univ. of Delaware, Newark, DE (United States). Dept. of Physics and Astronomy
- Univ. of Nebraska, Lincoln, NE (United States). Dept. of Physics and Astronomy and Nebraska Center for Materials and Nanoscience
- Publication Date:
- Research Org.:
- Univ. of Nebraska, Lincoln, NE (United States); Univ. of Delaware, Newark, DE (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1511046
- Grant/Contract Number:
- FG02-04ER46152; FG02-90ER45413
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Nanomaterials
- Additional Journal Information:
- Journal Volume: 8; Journal Issue: 4; Journal ID: ISSN 2079-4991
- Publisher:
- MDPI
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 36 MATERIALS SCIENCE; magnetic nanoparticles; cluster deposition; magnetization
Citation Formats
Tosun, Onur, Salehi-Fashami, Mohammed, Balasubramanian, Balamurugan, Skomski, Ralph, Sellmyer, David J., and Hadjipanayis, George. Structure and Magnetism of Mn5Ge3 Nanoparticles. United States: N. p., 2018.
Web. doi:10.3390/nano8040241.
Tosun, Onur, Salehi-Fashami, Mohammed, Balasubramanian, Balamurugan, Skomski, Ralph, Sellmyer, David J., & Hadjipanayis, George. Structure and Magnetism of Mn5Ge3 Nanoparticles. United States. https://doi.org/10.3390/nano8040241
Tosun, Onur, Salehi-Fashami, Mohammed, Balasubramanian, Balamurugan, Skomski, Ralph, Sellmyer, David J., and Hadjipanayis, George. Sun .
"Structure and Magnetism of Mn5Ge3 Nanoparticles". United States. https://doi.org/10.3390/nano8040241. https://www.osti.gov/servlets/purl/1511046.
@article{osti_1511046,
title = {Structure and Magnetism of Mn5Ge3 Nanoparticles},
author = {Tosun, Onur and Salehi-Fashami, Mohammed and Balasubramanian, Balamurugan and Skomski, Ralph and Sellmyer, David J. and Hadjipanayis, George},
abstractNote = {In this work, we investigated the magnetic and structural properties of isolated Mn5Ge3 nanoparticles prepared by the cluster-beam deposition technique. Particles with sizes between 7.2 and 12.6 nm were produced by varying the argon pressure and power in the cluster gun. X-ray diffraction (XRD)and selected area diffraction (SAD) measurements show that the nanoparticles crystallize in the hexagonal Mn5Si3-type crystal structure, which is also the structure of bulk Mn5Ge3. The temperature dependence of the magnetization shows that the as-made particles are ferromagnetic at room temperature and have slightly different Curie temperatures. Hysteresis-loop measurements show that the saturation magnetization of the nanoparticles increases significantly with particle size, varying from 31 kA/m to 172 kA/m when the particle size increases from 7.2 to 12.6 nm. The magnetocrystalline anisotropy constant K at 50 K, determined by fitting the high-field magnetization data to the law of approach to saturation, also increases with particle size, from 0.4 × 105 J/m3 to 2.9 × 105 J/m3 for the respective sizes. This trend is mirrored by the coercivity at 50 K, which increases from 0.04 T to 0.13 T. A possible explanation for the magnetization trend is a radial Ge concentration gradient.},
doi = {10.3390/nano8040241},
journal = {Nanomaterials},
number = 4,
volume = 8,
place = {United States},
year = {2018},
month = {4}
}
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Works referenced in this record:
Enhanced spin accumulation and novel magnetotransport in nanoparticles
journal, December 2004
- Yakushiji, Kay; Ernult, Franck; Imamura, Hiroshi
- Nature Materials, Vol. 4, Issue 1
Permanent magnets: Plugging the gap
journal, September 2012
- Coey, J. M. D.
- Scripta Materialia, Vol. 67, Issue 6
Epitaxial ferromagnetic Mn5Ge3 on Ge(111)
journal, December 2003
- Zeng, Changgan; Erwin, S. C.; Feldman, L. C.
- Applied Physics Letters, Vol. 83, Issue 24
Spin Transfer Torques in MnSi at Ultralow Current Densities
journal, December 2010
- Jonietz, F.; Muhlbauer, S.; Pfleiderer, C.
- Science, Vol. 330, Issue 6011
Simulation of the enhanced Curie temperature in Mn5Ge3Cx compounds
journal, May 2009
- Slipukhina, I.; Arras, E.; Mavropoulos, Ph.
- Applied Physics Letters, Vol. 94, Issue 19
The emergence of spin electronics in data storage
journal, November 2007
- Chappert, Claude; Fert, Albert; Van Dau, Frédéric Nguyen
- Nature Materials, Vol. 6, Issue 11
Strongly enhanced Curie temperature in carbon-doped Mn5Ge3 films
journal, November 2000
- Gajdzik, M.; Sürgers, C.; Kelemen, M. T.
- Journal of Magnetism and Magnetic Materials, Vol. 221, Issue 3
Unusual spin correlations in a nanomagnet
journal, June 2015
- Balasubramanian, Balamurugan; Manchanda, Priyanka; Skomski, Ralph
- Applied Physics Letters, Vol. 106, Issue 24
On the Magnetic Anisotropy of Single Crystal of Mn 5 Ge 3
journal, June 1963
- Tawara, Yoshio; Sato, Kiyoo
- Journal of the Physical Society of Japan, Vol. 18, Issue 6
Rare-earth-rich metallic glasses. I. Magnetic hysteresis
journal, April 1981
- Hadjipanayis, G.; Sellmyer, D. J.; Brandt, B.
- Physical Review B, Vol. 23, Issue 7
Mn 5 Si 3 Nanoparticles: Synthesis and Size-Induced Ferromagnetism
journal, January 2016
- Das, Bhaskar; Balasubramanian, Balamurugan; Manchanda, Priyanka
- Nano Letters, Vol. 16, Issue 2
Self-assembled Mn5Ge3 nanomagnets close to the surface and deep inside a Ge1−xMnx epilayer
journal, July 2009
- Lechner, R. T.; Holý, V.; Ahlers, S.
- Applied Physics Letters, Vol. 95, Issue 2
Magnetic Mn5Ge3 nanocrystals embedded in crystalline Ge: a magnet/semiconductor hybrid synthesized by ion implantation
journal, September 2012
- Zhou, Shengqiang; Zhang, Wenxu; Shalimov, Artem
- Nanoscale Research Letters, Vol. 7, Issue 1
Magnetotransport in ferromagnetic , and thin films
journal, September 2014
- Sürgers, Christoph; Fischer, Gerda; Winkel, Patrick
- Physical Review B, Vol. 90, Issue 10
High anisotropy Sm–Co nanoparticles: Preparation by cluster gun technique and their magnetic properties
journal, May 2003
- Stoyanov, S.; Skumryev, V.; Zhang, Y.
- Journal of Applied Physics, Vol. 93, Issue 10
Ferromagnetic resonance in Mn 5 Ge 3 epitaxial films with weak stripe domain structure
journal, February 2017
- Kalvig, R.; Jedryka, E.; Aleshkevych, P.
- Journal of Physics D: Applied Physics, Vol. 50, Issue 12
First-principles characterization of ferromagnetic for spintronic applications
journal, December 2004
- Picozzi, S.; Continenza, A.; Freeman, A. J.
- Physical Review B, Vol. 70, Issue 23
On the saturation magnetization of Mn5 Ge3
journal, September 1973
- Kappel, G.; Fischer, G.; Jaegle, A.
- Physics Letters A, Vol. 45, Issue 3
Magnetic and magnetocaloric properties of Mn5Ge3−Sb
journal, May 2002
- Songlin, ; Tegus, O.
- Journal of Alloys and Compounds, Vol. 337, Issue 1-2
Spin polarization tuning in Mn5−xFexGe3
journal, September 2008
- Stroppa, A.; Kresse, G.; Continenza, A.
- Applied Physics Letters, Vol. 93, Issue 9
Giant Magnetic Anisotropy of Single Cobalt Atoms and Nanoparticles
journal, May 2003
- Gambardella, P.
- Science, Vol. 300, Issue 5622
Exchange and magnetic order in bulk and nanostructured Fe5Si3
journal, August 2018
- Skomski, R.; Kumar, P.; Balamurugan, B.
- Journal of Magnetism and Magnetic Materials, Vol. 460
Enhanced Curie temperature and spin polarization in Mn4FeGe3
journal, October 2007
- Chen, T. Y.; Chien, C. L.; Petrovic, C.
- Applied Physics Letters, Vol. 91, Issue 14
Competing magnetic phases of Mn 5 Ge 3 compound
journal, January 2007
- Stroppa, Alessandro; Peressi, Maria
- physica status solidi (a), Vol. 204, Issue 1
Epitaxial growth of Mn5Ge3/Ge(111) heterostructures for spin injection
journal, November 2008
- Olive-Mendez, S.; Spiesser, A.; Michez, L. A.
- Thin Solid Films, Vol. 517, Issue 1
Magnetic and magneto‐optical properties of Mn 5 (Ge 1− x M x ) 3 alloys with M=Sn, Pb
journal, May 1994
- Zhang, Y.; Runge, A. P.; Shan, Z. S.
- Journal of Applied Physics, Vol. 75, Issue 10
Epitaxial Mn 5 Ge 3 nano-islands on a Ge(001) surface
journal, December 2007
- Kim, Howon; Jung, Goo-Eun; Lim, Jin-Hyung
- Nanotechnology, Vol. 19, Issue 2
Magnetic order by C-ion implantation into Mn5Si3 and Mn5Ge3 and its lateral modification
journal, August 2008
- Sürgers, C.; Potzger, K.; Strache, T.
- Applied Physics Letters, Vol. 93, Issue 6
Structure and magnetism of Ge3Mn5 clusters
journal, January 2011
- Jain, A.; Jamet, M.; Barski, A.
- Journal of Applied Physics, Vol. 109, Issue 1
Initial stages of Mn adsorption on Ge(111)
journal, November 2004
- Zeng, Changgan; Zhu, Wenguang; Erwin, Steven C.
- Physical Review B, Vol. 70, Issue 20
The spatial distribution of magnetisation density in Mn 5 Ge 3
journal, March 1990
- Forsyth, J. B.; Brown, P. J.
- Journal of Physics: Condensed Matter, Vol. 2, Issue 11
Magnetoresistance of Mn:Ge ferromagnetic nanoclusters in a diluted magnetic semiconductor matrix
journal, April 2001
- Park, Y. D.; Wilson, A.; Hanbicki, A. T.
- Applied Physics Letters, Vol. 78, Issue 18
A Group-IV Ferromagnetic Semiconductor: MnxGe1-x
journal, January 2002
- Park, Y. D.
- Science, Vol. 295, Issue 5555
Thin films from energetic cluster impact: A feasibility study
journal, September 1992
- Haberland, Hellmut; Karrais, Martin; Mall, Martin
- Journal of Vacuum Science & Technology A: Vacuum, Surfaces, and Films, Vol. 10, Issue 5
Surface anisotropy effects in NiO nanoparticles
journal, October 2005
- Winkler, E.; Zysler, R. D.; Mansilla, M. Vasquez
- Physical Review B, Vol. 72, Issue 13
Ferromagnetic percolation in MnxGe1−x dilute magnetic semiconductor
journal, April 2005
- Li, A. P.; Shen, J.; Thompson, J. R.
- Applied Physics Letters, Vol. 86, Issue 15
Electronic structural and magnetic properties of Mn 5 Ge 3 clusters
journal, November 2013
- Yuan, H. K.; Chen, H.; Kuang, A. L.
- The Journal of Chemical Physics, Vol. 139, Issue 20
Growth competition between semiconducting Ge 1− x Mn x nanocolumns and metallic Mn 5 Ge 3 clusters
journal, April 2012
- Le, Thi-Giang; Dau, Minh-Tuan; Le Thanh, Vinh
- Advances in Natural Sciences: Nanoscience and Nanotechnology, Vol. 3, Issue 2
Self-assembled Mn5Ge3 nanomagnets close to the surface and deep inside a Ge1-xMnx epilayer
text, January 2009
- Lechner, R. T.; Holy, V.; Ahlers, S.
- Universität Regensburg
Simulation of the enhanced Curie temperature in Mn_5Ge_3C_x compounds
text, January 2009
- Slipukhina, I.; Arras, E.; Mavropoulos, Ph.
- arXiv
Spin Transfer Torques in MnSi at Ultra-low Current Densities
text, January 2010
- Jonietz, F.; Mühlbauer, S.; Pfleiderer, C.
- arXiv
Magnetic Mn5Ge3 nanocrystals embedded in crystalline Ge: a magnet/semiconductor hybrid synthesized by ion implantation
text, January 2012
- Zhou, Shengqiang; Zhang, Wenxu; Shalimov, A.
- arXiv
Magnetotransport in ferromagnetic Mn5Ge3, Mn5Ge3C0.8, and Mn5Si3C0.8 thin films
text, January 2014
- Sürgers, Christoph; Fischer, Gerda; Winkel, Patrick
- arXiv
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- Tosun, O.; Ruzybayev, I.; Abel, F. M.
- AIP Advances, Vol. 9, Issue 12
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- Tosun, Onur; Abel, Frank M.; Balasubramanian, Balamurugan
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